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晨飛資訊</a> » <a href="/Article/gaopinbianyaqiyixian_1.html">高頻變壓器異響跟開(kāi)關(guān)電源的負(fù)載有關(guān)系么?</a></div>
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高頻變壓器異響跟開(kāi)關(guān)電源的負(fù)載有關(guān)系么?</h3>
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<span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責(zé)任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span
id="cntrHits">-</span></span><span>發(fā)表時(shí)間??015-07-07 08:46:00</span>
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<p><span style="font-size: 14px"> 高頻變壓器是作為開(kāi)關(guān)電源最主要的組成部分。下面就高頻變壓器異??mdash;—開(kāi)關(guān)電源的負(fù)載問(wèn)題做簡(jiǎn)單的分析</span></p>
<p> </p>
<p><span style="font-size: 14px"> 1.開(kāi)關(guān)電源在空載或輕載的情況下，在某些工作點(diǎn)處會(huì)發(fā)生振蕩現(xiàn)象，表現(xiàn)為變壓器的嘯叫和輸出的不穩(wěn)定??/span></p>
<p> </p>
<p><span style="font-size: 14px"> 發(fā)生這種現(xiàn)象是由于空??輕載時(shí)，開(kāi)關(guān)瞬時(shí)開(kāi)通時(shí)間過(guò)大從而造成輸出能量太大，進(jìn)而電壓過(guò)沖也很大，需要較長(zhǎng)的時(shí)間去恢復(fù)到正常電壓，因此開(kāi)關(guān)需停止工作一段時(shí)間，這樣開(kāi)關(guān)就工作于間歇性工作模式，使變壓器發(fā)生較低頻率(有規(guī)律的間歇性全截止周期或占空比劇烈變化的頻??的振動(dòng)??/span></p>
<p> </p>
<p><span style="font-size: 14px"> 2.<strong><a href="http://m.linhang.com.cn/product/product-0001,0015.shtml">高頻變壓??/a></strong>工作在嚴(yán)重的超載狀態(tài)，時(shí)刻都有燒毀的可??mdash;—這就是許多電源燒毀前“慘叫”的由來(lái)??/span></p>
<p> </p>
<p><span style="font-size: 14px"> 以上就是關(guān)于高頻變壓器異響時(shí)對(duì)于開(kāi)關(guān)電源的負(fù)載問(wèn)題的分析，希望能幫助到??</span></p>
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